Reloading .303 British : 30-303 Sizing Die

I'll lead this off by saying that I'm allergic to .311" projectiles.

I spoke to Manson Reamers, and they have a print for a 30-303 chamber reamer that looks good.

I'd like to know how guys go about sizing their 30-303 cases. Manson said they do a custom reamer for the sizing die, but I'm hoping I could get away using something off the shelf.

Has anyone had success with a standard .303 sizing die? I was thinking I might be able to replace the .308 expander ball with a .311 and be good.

He said otherwise I might use a bushing die, but I was thinking I might even get away with a .308 Win die to size down the neck. I'm not sure if this would work though, as I think the .308's neck is thicker.

Thanks,

Lawndart